Thermal conductivity of binary refrigerant mixtures of HFC-32/125 and HFC-32/134a in the liquid phase

Journal Article · Wed Sep 01 00:00:00 EDT 1999 · International Journal of Thermophysics

DOI:https://doi.org/10.1023/A:1021432920199· OSTI ID:20020841

Gao, X; Nagasaka, Y; Nagashima, A

The liquid thermal conductivity of mixtures of HFC-32/125 and HFC-32/134a was measured using the transient hot-wire apparatus in the temperature ranges from 213 to 293 K and from 193 to 313 K, respectively, in the pressure range from 2 to 30 MPa and with HFC-32 mass fractions of 0.249, 0.500, and 0.750 for each system. The uncertainty of the thermal conductivity was estimated to be {+-}0.7%. For practical applications, the thermal conductivity data for the two mixtures were represented by a polynomial in temperature, pressure, and mass fraction of HFC-32 with a standard deviation of 1.0%.

• Research Organization: Keio Univ., Yokohama (JP)
• OSTI ID: 20020841
• Journal Information: International Journal of Thermophysics, Vol. 20, Issue 5; Other Information: PBD: Sep 1999; ISSN 0195-928X
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
REFRIGERANTS
BINARY MIXTURES
FLUORINATED ALIPHATIC HYDROCARBONS
MATERIAL SUBSTITUTION
THERMAL CONDUCTIVITY